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Title:
CSPs: Soil effective cation exchange capacity: depth increments of Comparative Study Plots
Access rights:
Free for public
Usage rights:
Permission is granted to anybody to access, use and publish all open for public data freely. The commercial use of any data is prohibited. The quality and completeness of data cannot be guaranteed. Users employ these data at their own risk. In order to make attribution of use for owners of the data possible, the identifier of ownership of data must be retained with every data record. Users must publicly acknowledge, in conjunction with the use of the data, the data owners. Cite the data as follows: Geißler, C., Scholten, T. and Kühn, P. (2011): Effective cation exchange capacity of soils: depth increments of 27 Comparative Study Plots . BEF-China data portal (Accessed through URL http://china.befdata.biow.uni-leipzig.de/datasets/148)
Published:
No information available
Abstract:
Soil chemical laboratory analyses of all 27 comparative study plots. Contents of exchangable Na, K, Ca, Mg, Fe, Al, H, effective Cation Exchange Capacity (CECeff; extraction with 1 M NH4Cl) and base saturation (BS) of six depth increments per CSP. Total depth is 50 cm. Single element concentrations might be interesting if there are signs for toxic reactions in plants. Base saturation (sum of Na, K, Ca, Mg in % of CECeff). CECeff is the sum of all measured elements including H.
Design:
Depth increments were taken from systematic corings: 1 coring per subplot means 9 corings per CSP. Samples were bulked from the 9 corings to one sample per depth increment (0-5, 5-10, 10-20, 20-30, 30-40, 40-50 cm.), so that 6 samples exist per CSP.
Spatial extent:
The Gutianshan National Nature Reserve (NNR) is located in the western part of Zhejiang Province (29º8'18" – 29º17'29" N, 118º2'14" – 118º11'12" E, Fig. 1). The Gutianshan NNR has an area of approximately 81 km2. From 27 comparative study plots (CSPs) soil samples were taken in 6 depth increments per CSP
Temporal extent:
Samples were collected 2008 and 2009. Lab analyses were carried from 2009 to 2011
Taxonomic extent:
No organisms were sampled.
Measurement cirumstances:
No information available
Data analysis:
Base saturation (sum of Na, K, Ca, Mg in % of CECeff). CECeff is the sum of all measured elements including H. EA (Exchange acidity) is rarely used and is primarily associated with exchangable Al and H ions.

Filter:
Dataset column

Name:
lab_num
Definition:
laboratory number of laboratory of soil science and geoecology in Tübingen
Unit:
No information available
Datagroup:
Laboratory number of Laboratory of Soil Science and Geoecology in Tübingen
Keywords:
soil base
Values:
3381
3380
3379
3382
3378
Contributors:

Dataset column

Name:
CSP
Definition:
name of the CSP in the Nature ReserveBEF research plot nameReasearch plots of the Biodiversity - Ecosystem functioning experiment (BEF-China). There are three main sites for research plots in the BEF Experiment: Comparative Study Plots (CSP) in the Gutianshan Nature Reserve, having a size of 30x30m^2, measured on the ground.
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
CSP
Values:
CSP05
CSP03
CSP01
CSP04
CSP02
Contributors:
No information available

Dataset column

Name:
sample_num
Definition:
field name of the sample, consisting of the CSP name, the sample type (P for Profile and S for incremental sample) and the depth
Unit:
No information available
Datagroup:
Helper
Keywords:
soil base
Values:
CSP01-S-1-1
CSP01-S-1-3
CSP01-S-1-5
CSP01-S-1-2
CSP01-S-1-4
Contributors:
No information available

Dataset column

Name:
depth_lb
Definition:
depth (lower boundary) of the sample
Unit:
cm
Datagroup:
Soil depth
Keywords:
soil, soil depth
Values:
5
30
40
10
20
Contributors:
No information available

Dataset column

Name:
IE_Na
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
natrium
Values:
0.12
0.13
0.11
0.1
<0.10
Contributors:

Dataset column

Name:
IE_K
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
kalium
Values:
0.71
0.61
0.67
0.69
0.68
Contributors:

Dataset column

Name:
IE_Mg
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
magnesium
Values:
0.34
0.28
0.2
0.37
0.35
Contributors:

Dataset column

Name:
IE_Ca
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
calcium
Values:
0.24
0.31
0.29
0.23
0.33
Contributors:

Dataset column

Name:
IE_Mn
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
manganese
Values:
0.06
0.07
0.03
0.08
0.04
Contributors:

Dataset column

Name:
IE_Fe
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
Fe
Values:
0.03
0.05
0.04
<0.03
0.06
Contributors:

Dataset column

Name:
IE_Al
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
aluminium
Values:
18.68
111.84
19.5
20.49
134.67
Contributors:

Dataset column

Name:
IE_H
Definition:
ion equivalent (IE) of element
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
hydrogen
Values:
0.4
0.5
0.7
0.6
0.8
Contributors:

Dataset column

Name:
CECeff
Definition:
effective cation exchange capacity
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
cation exchange capacity
Values:
159.1
126.7
122.2
23.5
126.8
Contributors:

Dataset column

Name:
EA
Definition:
exchange acidity: This acidity is primarily associated with exchangable Al and H ions. Once released to the soil solution, the aluminium hydrolyzes to form additional H ions.
Unit:
µmolc/g
Datagroup:
Exchangable cations
Keywords:
acidity
Values:
147.3
19.9
105.7
119.9
20.9
Contributors:

Dataset column

Name:
BS
Definition:
base saturation, ratio between 0 and 100 %, sum of IEs(Na, K, Mg, Ca); as percentage of CECeff
Unit:
%
Datagroup:
Base saturation
Keywords:
base saturation
Values:
10.1
10.4
10.7
10.8
10.6
Contributors:

No information available


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16 scholten medium

Thomas
Scholten

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37 Datasets

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Peter
Kühn

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2 Projects

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Christian
Geißler

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1 Projects

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